Ventilator



" citizen ofthe United States, residing in Chiany great extent mar or disgure thatto which nois, have invented a new and useful Improve' UNITED- STATESl ,PATENT Omen. a

EDWARD J. conexos cH'IC-Aeo, ILLINOISi SPECIFICATIONforming'prtof Leiters Patn:Nb.a's1,11z.aatd aprnl'l, rasa.

Application filed August 8, 1887.

To aZZ whom-.it may concern-.-

Be It known that I, EDWARD J. CQLBY, a

cago, in the county of Cook and State of Illiment in Ventilators, of which the following is a specification. f

My invention relates to ventilators, and has for its object to provide a ventilator which may be automatically opened by the use vof electricity from a distance, and which is convenient, easy of application, and does not to itis applied. i

Theapplication ofv my invention to ay window-sash is illustrated in the accompanying drawings, wherein-- Figure 1 is a cross-section through the line a: .x of Fig. 3. Fig. 2 is the same view with. the ventilator closed. Fig.'3 isa side view'of the ventilator open. Fig. 4. is a detail view of the application of electricity to open or unfk lock the ventilator. l

' Like parts are indicated by the'same letter in all the figures.

A is the lower end of a windowsash having the side portion, B.

C is the inner` valve,' ]'ournaledv on a crossrod,'D, secured to the angle-bar'E, also journaled on rod D. i

` F is a spiral spring coiled around the rod D and havingthe 'end"F, .which bears upwardly against the valve C, and the endFz bearing upwardly, against the inner portion ofthe aperture G.

His the outer valve,journaledA on the rod I, about which isv coiled the springJ, having the end J', which bears against the lower surface of the valve H, and J 2, which is secured to the bottom of the aperture G.

K is a sheetof netting or other similar niaterial fastened across the outer face of the ap-v erture G. The end J of the wire J passes intor the lkeeper J3 on the lower side of the valve E, and thevend vJ2 is secured tothe bot`V tom of the aperture. y

L isa button pivoted on the bottomy of the window-sash just below the aperture G and adapted to engage the outer lower edge of the valve C, and thus4 keep the same closed, as shown in Fig. 2. In the modification the Serial No.7 246,3 95. (No model.)

` parts are the same,`,exoept that the button Lis removed and the keeper M is placed on the lower inner surface ofthe valve "G. This keeper is adapted to be yengaged by thefendof 5 5 i "the pivoted catch N ,which is held toward the l saine by the spring O. P P are the coils of va magnet, and R, S, and

T wires which form the circuit throughjsaidl: magnet, being `connected-properly withthejo push-,button U and the battery V. f The springcatch N operates as an armaturebar, and when a current, by theus'e ofthe i n push-button U, is passed through the"y magnet f thesame is drawn, toward `said magnet, and

thus the catch is released. The bar N has any inwardly-turned end, N5, which terminates in the point N2. f f .The use and operation of. my invention are'r as follows: When 'it is desired to 'admitthe v76j Y.

fresh air into an apartment by meansof'my invention, the same having been inserted', as shown and described, inthe lower portion oty the sash ofa window, the button is turned, whereupon the ends Fand F2 of the springl?, 1,75- having the tendency to expand,c ause the valve lC to be raised into theposition shown in 1, where it is securely held.' By so doing the curved leg of the angle-bar E is thrown down, into the positionshown in Fig. 1, and thus the 8o valve H is relieved from vits support land is, permitted to fold into the position shown-in Fig. 1, this being Vcaused bythe tendency of the ends Jaud J2 ofthe springJto expand or open out.y In'Lk this manner thedevice is free 85 for the admittance of air, the same passing through the aperture G, and the screen placed in theoutside of the aperture to cover the same,

if desired, and to prevent the admission of foreign matter. When the'ventilator is desired 90 to be placed outI of use, it is only necessary to force the valve C against the pressure of the spring ends F and F? into the position shown in Fig. 2, where it may be locked inf'place by; the button L. By this same action the anglebar E is raised, carrying with it the valve H,

closing the aperture, and expanding `the ends J and J2 of the spring J. vIn this position the ventilator is closed, as shown in Fig; 2. To apply electricity, an aperture -is worked out vat 1to0 l the side of the aperture G, and in itis pivoted the spring-catch N, being ,drawn inwardly by the spring O. This catch is provided with the beveled end N2, as described and shown in Fig. 4, and as used in the application of -electricity to close the aperture. When the valve C is closed, the keeper M engages the end N, and thus the valve is held closed. If, now, it is desired to control this'ventilator from a distance, it is done by the use of the push-button U. When the circuit is closed by the same, a

current Will be sent through the magnet-coils vP P and the armature N will be drawn up-A Wardly, thus releasing the valve C, when, by the action of the several spring ends above alluded to, the ventilator'- Will be immediately thrown into the position shown in Fig. l. Of course any number of these devices could be employed and connected with one battery and push-button,so as to be opened simultaneous] y, and I have even contemplated in certain cases an application of electricity in a similar manner` to cause the valves to spring closed; but this I do not show or claim.'

Having thus described my invention, what I claim, and desire to secure by Letters-Patent, is as follows:

In a ventilator adapted to be applied to an aperture opening both into the exterior and interior of a room, the combination of a flap hinged upon a transverse rod at the inner edge, a similar flap similarly hinged at the outer edge, both provided with actuating-springs, an arm from one which engages and simultaneously operates the other, anda locking device, substantially as described, which retains the Whole in position.

ED WARD J. COLBY.-

Witnesses:

FRANCES W. PARKER, Cona L. GADWALLADER. 

